000 WTNT32 KNHC 012031 TCPAT2 BULLETIN TROPICAL STORM KATIA ADVISORY NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122011 500 PM AST THU SEP 01 2011 ...KATIA WEAKENS TO TROPICAL STORM...EXPECTED TO RESTRENGTHEN... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...16.1N 49.2W ABOUT 930 MI...1495 KM E OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.23 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 500 PM AST...2100 UTC...THE CENTER OF TROPICAL STORM KATIA WAS LOCATED NEAR LATITUDE 16.1 NORTH...LONGITUDE 49.2 WEST. KATIA IS MOVING TOWARD THE WEST NEAR 18 MPH...30 KM/H. A GENERAL MOTION TOWARD THE WEST-NORTHWEST AND A DECREASE IN FORWARD SPEED ARE EXPECTED DURING THE NEXT COUPLE OF DAYS. MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 70 MPH...110 KM/H...WITH HIGHER GUSTS. SOME RE-STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 990 MB...29.23 INCHES. HAZARDS AFFECTING LAND ---------------------- SURF...SWELLS GENERATED BY KATIA WILL BEGIN AFFECTING THE LESSER ANTILLES BY LATE FRIDAY. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS. PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...1100 PM AST. $$ FORECASTER ZELINSKY/CANGIALOSI